Nail buffer



FIG. 1 is a top perspective view of a nail buffer showing my new design;

FIG. 2 is a front elevation view thereof, the rear elevation view being identical;

FIG. 3 is a right side view thereof, the left side view being identical; and,

FIG. 4 is a top plan view thereof; the bottom plan view being identical. 

CLAIM The ornamental design for a nail buffer, as shown and described. 